Jawbone has announced two new fitness trackers, UP3 ($180) and UP Move ($50). UP3 is being billed as “the world’s most advanced tracker.” The wristband tracker boasts advanced sleep tracking and uses a bioimpedance sensor to automatically measure resting heart rate. Other sensors on the tracker include an accelerometer, a skin temperature sensor, and an ambient temperature sensor. UP3 is water-resistant up to 10 meters (about 33…
